The benefit of Trade

“Nine tenths of sustenance is derived from trade and one tenth from pastoral farming.”

I am looking for its reference.

Answer

Imams Sa’id ibn Mansur and Ibrahim Al-Harby (rahimahumallah) have recorded the following narration with a reliable chain from the Tabi’i; Nu’aym ibn ‘Abdir Rahman that Rasulullah (sallallahu’alayhi wasallam) said: